| Swansea to Thornaby on Tees | 4,062.11 mi (6,537.33 km) |
| Swansea to Thornbury | 4,099.81 mi (6,598.01 km) |
| Swansea to Thorne | 4,101.83 mi (6,601.26 km) |
| Swansea to Thornton | 4,063.41 mi (6,539.43 km) |
| Swansea to Thornton Heath | 4,199.80 mi (6,758.93 km) |
| Swansea to Thorpe Saint Andrew | 4,216.95 mi (6,786.52 km) |
| Swansea to Thundersley | 4,221.45 mi (6,793.77 km) |
| Swansea to Tilbury | 4,215.94 mi (6,784.89 km) |
| Swansea to Tilehurst | 4,161.98 mi (6,698.06 km) |
| Swansea to Timperley | 4,056.80 mi (6,528.78 km) |
| Swansea to Tipton | 4,090.79 mi (6,583.49 km) |
| Swansea to Tiptree | 4,220.12 mi (6,791.63 km) |
| Swansea to Tiverton | 4,082.29 mi (6,569.81 km) |
| Swansea to Todmorden | 4,056.39 mi (6,528.13 km) |
| Swansea to Tonbridge | 4,220.90 mi (6,792.88 km) |
